December weather forecast
Lynnwood Gardens, PA

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Weather in December

December, the first month of the winter in Lynnwood Gardens, is still a chilly month, with temperature in the range of an average high of 42.8°F (6°C) and an average low of 31.6°F (-0.2°C).

Temperature

December's arrival corresponds with a decrease in average high-temperatures, from November's cool 52.2°F (11.2°C) to a chilly 42.8°F (6°C). In Lynnwood Gardens, an average temperature of 31.6°F (-0.2°C) is noted during December nights.

Humidity

February, October and December, with an average relative humidity of 78%, are the most humid months.

Rainfall

In Lynnwood Gardens, in December, it is raining for 7.5 days, with typically 1.14" (29mm) of accumulated precipitation. Throughout the year, there are 122.4 rainfall days, and 12.68" (322mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall. In December, it is snowing for 2.5 days. Throughout December, 0.71" (18mm) of snow is accumulated. Throughout the year, there are 16.3 snowfall days, and 4.72" (120mm) of snow is accumulated.

Daylight

The month with the shortest days in Lynnwood Gardens is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:04 am and sunset at 4:35 pm. On the last day of December, sunrise is at 7:22 am and sunset at 4:45 pm EST.

Sunshine

The average sunshine in December is 5h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Stay sun-safe with clothing that is both closely woven and worn loosely. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold during December?

The average high-temperature and low-temperature during December are 42.8°F (6°C) and 31.6°F (-0.2°C) respectively. The average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, in August is calculated to be 89.6°F (32°C).

What is the most humid month?

February, October and December, with an average relative humidity of 78%, are most humid months.

What is the average humidity in December?

The average relative humidity in December is 78%.

How much does it rain in December?

In December, the rain falls for 7.5 days. Throughout December, 1.14" (29mm) of precipitation is accumulated.

How many days does it snow in December?

In December, it is snowing for 2.5 days. Throughout December, 0.71" (18mm) of snow is accumulated.

What is the month with the shortest days?

With an average of 9h and 24min of daylight, December has the shortest days of the year.

How many hours of daylight does Lynnwood Gardens have in December?

In Lynnwood Gardens, the average day length in December is 9h and 23min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 4:35 pm. On the last day of the month, in Lynnwood Gardens, sunrise is at 7:22 am and sunset at 4:45 pm EST.

How long on average sun shines in December?

In Lynnwood Gardens, the average sunshine duration in December is 5h.

When is the lowest UV index?

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.

What is the UV index reading in December?

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Lynnwood Gardens, PA

Average temperature in December - Lynnwood Gardens, PA
  • Average high temperature in December: 42.8°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in December: 31.6°F

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).

Average pressure in December
Lynnwood Gardens, PA

Average pressure in December - Lynnwood Gardens, PA
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Lynnwood Gardens, PA

Average wind speed in December - Lynnwood Gardens, PA
  • Average wind speed in December: 7.6mph

The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in December
Lynnwood Gardens, PA

Average humidity in December - Lynnwood Gardens, PA
  • Average humidity in December: 78%

The months with the highest relative humidity are February, October and December (78%).
The months with the lowest relative humidity are April, July and August (72%).

Average rainfall in December
Lynnwood Gardens, PA

Average rainfall in December - Lynnwood Gardens, PA
  • Average rainfall in December: 1.14"

The wettest month (with the highest rainfall) is August (1.54").
The driest month (with the least rainfall) is September (0.75").

Average rainfall days in December
Lynnwood Gardens, PA

Average rainfall days in December - Lynnwood Gardens, PA
  • Average rainfall days in December: 7.5 days

The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is November (6.4 days).

Average snowfall in December
Lynnwood Gardens, PA

Average snowfall in December - Lynnwood Gardens, PA
  • Average snowfall in December: 0.71"

The month with the highest snowfall is February (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Lynnwood Gardens, PA

Average snowfall days in December - Lynnwood Gardens, PA
  • Average snowfall days in December: 2.5 days

The month with the highest number of snowfall days is January (5.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Lynnwood Gardens, PA

Average daylight in December / Average sunshine in December - Lynnwood Gardens, PA
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 5h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
Lynnwood Gardens, PA

Average sunshine days in December - Lynnwood Gardens, PA
  • Average sunshine days in December: 20.9 days

The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is May (14.4 days).

Average UV index in December
Lynnwood Gardens, PA

Average UV index in December - Lynnwood Gardens, PA
  • Average UV index in December: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in December
Lynnwood Gardens, PA

Average cloud cover in December - Lynnwood Gardens, PA
  • Average cloud cover in December: 47

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in December
Lynnwood Gardens, PA

Average visibility in December - Lynnwood Gardens, PA
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

Lynnwood Gardens, Pennsylvania, USA

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